Magnetic Driven Nanocarriers for pH-Responsive Doxorubicin Release in Cancer Therapy.

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ID: 84100
2020
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Abstract
Doxorubicin is one of the most widely used anti-cancer drugs, but side effects and selectivity problems create a demand for alternative drug delivery systems. Herein we describe a hybrid magnetic nanomaterial as a pH-dependent doxorubicin release carrier. This nanocarrier comprises magnetic iron oxide cores with a diameter of 10 nm, enveloped in a hybrid material made of siliceous shells and ĸ-carrageenan. The hybrid shells possess high drug loading capacity and a favorable drug release profile, while the iron oxide cores allows easy manipulation via an external magnetic field. The pH responsiveness was assessed in phosphate buffers at pH levels equivalent to those of blood (pH 7.4) and tumor microenvironment (pH 4.2 and 5). The nanoparticles have a loading capacity of up to 12.3 wt.% and a release profile of 80% in 5 h at acidic pH versus 25% at blood pH. In vitro drug delivery tests on human breast cancer and non-cancer cellular cultures have shown that, compared to the free drug, the loaded nanocarriers have comparable antiproliferative effect but a less intense cytotoxic effect, especially in the non-cancer cell line. The results show a clear potential for these new hybrid nanomaterials as alternative drug carriers for doxorubicin.
Reference Key
nogueira2020magneticmolecules Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Nogueira, João;Soares, Sofia F;Amorim, Carlos O;Amaral, João S;Silva, Cláudia;Martel, Fátima;Trindade, Tito;Daniel-da-Silva, Ana L;
Journal molecules
Year 2020
DOI
E333
URL
Keywords
magnetic nanoparticles ph-responsive doxorubicin drug carrier iron oxide κ-carrageenan

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